Exam 17: Industrial Locations

A transformer vault door must be ____.

A tap conductor is a ____ that exceeds the value permitted for similar conductors protected as otherwise described in 240.4.

Knife switches rated more than ____, and at over 1000 amperes at 251 to 1000 volts, shall be used only as isolating switches and shall not be opened under load.

The capacitor circuit conductor's ampacity shall be at least ____% of the capacitor's rated current.

Cartridge fuse and fuseholder overcurrent protection provisions are located in ____.

Barriers are required in all service-entrance motor-control centers to ____ and terminals from the remainder of the motor-control center.

Minimum ampacity of arc welder conductors supplying a group of welders shall be based on ____ as determined in 630.11(A)

Cable tray systems should be ____.

A transformer's primary conductors shall have an ampacity at least ____ of the feeder conductors' overcurrent device rating.

If a single raceway supplies an equipment grounding conductor, only one ____ equipment grounding conductor is required.

Wherever such an arrangement is practicable, transformer vaults shall be located so that ____.

If a crane, hoist, or monorail hoist operates above readily combustible material, specific requirements shall apply to ____.

Motor circuits rated 1000 volts, nominal, or less, shall have a disconnecting means with an ampere rating of at least ____% of the motor's full-load current rating.

A 60-ampere rated conductor is the minimum size allowed if the overcurrent protection on the tap conductor's line side is ____.

Means shall be provided to disconnect all conductors in a building (or other structure) from the ____.

____ branch circuits shall be protected at the motor nameplate current rating.

Where multiple power supplies serve the same dc system, the dc side of each power supply shall have a ____.

Where an orderly shutdown is required to minimize the personnel/equipment hazard(s), a system of coordination based on the following two conditions is permitted: (1) coordinated short-circuit protection and (2) ____.

The combined length of one primary plus one secondary conductor (excluding any portion of the primary conductor protected at its ampacity) shall not exceed ____.

The tap conductor's ampacity shall not be less than the ____ on the circuits it supplies.